factory magnum 360 roller lifters

as I said above, "all forged rotating assembly". that includes forged steel 4340 crank, forged steel 4340 I beam rods and forged pistons. everything will be balanced of course and the block will be all studded and bored with torque plates. should be ok with a BIG shot of NOS I would think. on the edelbrock web site I think It said these springs were good up to .580 lift.